TriMas Ownership | Who Owns TriMas?

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TriMas Ownership Summary

TriMas is owned by 95.74% institutional investors, 22.14% insiders. Vanguard group is the largest institutional shareholder, holding 8.80% of TRS shares. Allspring Special Small Cap Value A is the top mutual fund, with 5.15% of its assets in TriMas shares.

TRS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	TriMas	95.74%	22.14%	-17.88%
Sector	Consumer Cyclical Stocks	42.52%	13.89%	43.59%
Industry	Packaging & Containers Stocks	41.77%	17.90%	40.33%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	3.57M	8.80%	$138.10M
Blackrock	3.13M	7.64%	$80.07M
Capital investors	2.89M	7.11%	$111.67M
Blackrock funding, inc. /de	2.51M	6.17%	$96.80M
Allspring global investments	2.49M	6.13%	$94.11M
Dimensional fund advisors lp	2.22M	5.46%	$85.78M
Pzena investment management	1.30M	3.21%	$50.32M
State street	894.37K	2.20%	$34.56M
Massachusetts financial services co /ma/	886.27K	2.18%	$34.25M
Geode capital management	875.74K	2.16%	$33.84M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Barington capital group	275.00K	7.98%	$10.63B
Medina value partners	544.19K	4.91%	$21.03M
Bellecapital	685.86K	4.28%	$26.50M
Advisory research	750.59K	3.81%	$29.00M
Alta fox capital management	336.14K	2.90%	$12.99M
Simcoe capital management	268.85K	1.51%	$10.39M
Blue grotto capital	308.62K	1.38%	$11.93M
Beacon harbor wealth advisors	151.22K	1.37%	$5.84M
Alpha wave global, lp	342.34K	1.34%	$13.23M
Ophir asset management pty	221.86K	1.06%	$8.57M

Top Buyers

Holder	Shares	% Assets	Change
Capital investors	2.89M	0.02%	2.89M
Nuveen	808.97K	0.01%	534.14K
Blue grotto capital	308.62K	1.38%	308.62K
Alpha wave global, lp	342.34K	1.34%	268.51K
J. goldman & co lp	482.16K	0.47%	258.72K

Top Sellers

Holder	Shares	% Assets	Change
Fiduciary management inc /wi/	-	-	-2.61M
River road asset management	-	-	-1.39M
Irenic capital management lp	-	-	-901.93K
Pzena investment management	1.30M	0.16%	-875.50K
Medina value partners	544.19K	4.91%	-832.83K

New Positions

Holder	Shares	% Assets	Change	Value
Capital investors	2.89M	0.02%	2.89M	$111.67M
Blue grotto capital	308.62K	1.38%	308.62K	$11.93M
Tudor investment corp et al	243.77K	0.02%	243.77K	$9.42M
Cubist systematic strategies	213.93K	0.04%	213.93K	$8.27M
Point72 asset management	210.45K	0.01%	210.45K	$8.13M

Sold Out

Holder	Change
Stephens consulting	-15.00
Raleigh capital management	-15.00
Mather group, llc.	-17.00
Smartleaf asset management	-18.00
Parkside financial bank & trust	-20.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	201	21.82%	38,894,545	0.97%	95	1.06%	107	28.92%	70	18.64%
Jun 30, 2025	165	7.14%	38,519,456	-3.02%	94	0.99%	83	-1.19%	59	28.26%
Mar 31, 2025	152	4.11%	39,677,465	-2.01%	97	0.98%	83	23.88%	45	-6.25%
Dec 31, 2024	95	-37.09%	29,393,654	-23.97%	72	0.80%	39	-36.07%	30	-50.82%
Sep 30, 2024	151	-5.63%	38,661,472	-1.39%	95	1.03%	61	-24.69%	61	12.96%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Allspring Special Small Cap Value A	2.09M	5.15%	-143.63K
FMI Common Stock Investor	1.45M	3.57%	-230.00K
Vanguard Total Stock Mkt Idx Inv	1.19M	2.92%	-50.62K
Vanguard US Total Market Shares ETF	1.15M	2.83%	-197.60K
Vanguard Small Cap Index	887.88K	2.18%	-5.78K
Advisory Research Partners	885.00K	2.18%	-
iShares Russell 2000 ETF	803.14K	1.98%	-
Champlain Small Company Fund, LLC	739.28K	1.82%	-4.85K
MFS New Discovery Value I	646.11K	1.59%	-67.28K
Vanguard Small Cap Value Index Inv	571.70K	1.41%	1.26K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 12, 2025	Tredwell Daniel P	-	Buy	$2.35K
Nov 11, 2025	Fielkow Jeffrey A	-	Buy	$62.92K
Aug 11, 2025	Tredwell Daniel P	-	Buy	$2.35K
Jun 05, 2025	SHAPIRA ADRIANNE	-	Buy	$103.29K
Jun 04, 2025	SHAPIRA ADRIANNE	-	Buy	$31.57K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	2	-
2025 Q3	1	-
2025 Q2	11	-
2025 Q1	11	1
2024 Q4	2	1

TRS Ownership FAQ

Who Owns TriMas?

TriMas shareholders are primarily institutional investors at 95.74%, followed by 22.14% insiders and -17.88% retail investors. The average institutional ownership in TriMas's industry, Packaging & Containers Stocks , is 41.77%, which TriMas exceeds.

Who owns the most shares of TriMas?

TriMas’s largest shareholders are Vanguard group (3.57M shares, 8.80%), Blackrock (3.13M shares, 7.64%), and Capital investors (2.89M shares, 7.11%). Together, they hold 23.55% of TriMas’s total shares outstanding.

Does Blackrock own TriMas?

Yes, BlackRock owns 7.64% of TriMas, totaling 3.13M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 80.07M$. In the last quarter, BlackRock decreased its holdings by -27.274K shares, a -0.86% change.

Who is TriMas’s biggest shareholder by percentage of total assets invested?

Barington capital group is TriMas’s biggest shareholder by percentage of total assets invested, with 7.98% of its assets in 275K TriMas shares, valued at 10.63B$.

Who is the top mutual fund holder of TriMas shares?

Allspring Special Small Cap Value A is the top mutual fund holder of TriMas shares, with 5.15% of its total shares outstanding invested in 2.09M TriMas shares.

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